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  <h1>基于51单片机的电子时钟设计</h1>

<h2 id="_1">功能介绍<a class="headerlink" href="#_1" title="Permanent link">&para;</a></h2>
<p>1、从DS1302中读取时间显示</p>
<p>2、一共4个按键，按键1按下进入修改时间模式，再按下切换修改的时间变量，这个时候第2和3个按键就是修改时间变量的按键，修改完毕后，点击按键4确认修改</p>
<p>3、不是修改模式下，按下按键2，可以切换时间和日期的显示</p>
<p>4、修改模式下，对应修改的时间变量会闪烁</p>
<h2 id="_2">软件平台及代码开源<a class="headerlink" href="#_2" title="Permanent link">&para;</a></h2>
<p>仿真软件：Proteus 8.9</p>
<p>代码编写：Keil5</p>
<p>百度网盘链接：
链接：<a href="https://pan.baidu.com/s/1RP_8MkZIqHt7WFPc6na3sQ">https://pan.baidu.com/s/1RP_8MkZIqHt7WFPc6na3sQ</a>
提取码：y2fn</p>
<p>Gitee链接：
<a href="https://gitee.com/snqx-lqh/my_51_project_practice">51单片机项目学习: 这个仓库拿来保存一些51单片机项目学习 (gitee.com)</a></p>
<h2 id="_3">仿真硬件选型<a class="headerlink" href="#_3" title="Permanent link">&para;</a></h2>
<p><a class="glightbox" href="../image/51%E7%94%B5%E5%AD%90%E9%92%9F_1.png" data-type="image" data-width="auto" data-height="auto" data-desc-position="bottom"><img alt="" src="../image/51%E7%94%B5%E5%AD%90%E9%92%9F_1.png" /></a></p>
<p>DS1302获取当前时间，8位共阴极数码管，74HC138作位选，74HC573作段选，4个按键。</p>
<p><a class="glightbox" href="../image/51%E7%94%B5%E5%AD%90%E9%92%9F_2.png" data-type="image" data-width="auto" data-height="auto" data-desc-position="bottom"><img alt="" src="../image/51%E7%94%B5%E5%AD%90%E9%92%9F_2.png" /></a></p>
<h2 id="_4">代码编写<a class="headerlink" href="#_4" title="Permanent link">&para;</a></h2>
<h3 id="_5">整体设计思路<a class="headerlink" href="#_5" title="Permanent link">&para;</a></h3>
<p>从DS1302中读取出当前时间显示，在修改时间的时候，先把当前时间存入一篇缓存中，然后修改缓存中的数据，等到修改完毕后，再把缓存中的数据写入DS1302中。</p>
<h3 id="_6">软件代码设计<a class="headerlink" href="#_6" title="Permanent link">&para;</a></h3>
<h4 id="_7">数码管显示<a class="headerlink" href="#_7" title="Permanent link">&para;</a></h4>
<p>数码管的显示将放置在一个5ms的定时器中实现，每隔5ms，换一个显示的位次，通过74HC138的编码来达到显示位的改变。segCode就是存放的数码管段码，缓存，segBuff的实际值为多少，就是谁的段码，如果值为10，我设置的segCode为0x00，即为不显示。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">SegShow</span><span class="p">()</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="p">{</span>
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="w">    </span><span class="k">static</span><span class="w"> </span><span class="n">u8</span><span class="w"> </span><span class="n">segSelectCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="c1">//位选变量</span>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>
</span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="w">    </span><span class="n">segSelectCount</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-0-6"><a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">segSelectCount</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">7</span><span class="p">)</span>
</span><span id="__span-0-7"><a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="w">        </span><span class="n">segSelectCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-0-8"><a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a>
</span><span id="__span-0-9"><a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a><span class="w">    </span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mh">0x00</span><span class="p">;</span><span class="c1">//消隐</span>
</span><span id="__span-0-10"><a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a><span class="w">    </span><span class="k">switch</span><span class="w"> </span><span class="p">(</span><span class="n">segSelectCount</span><span class="p">)</span>
</span><span id="__span-0-11"><a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-0-12"><a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">0</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-13"><a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">1</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">1</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-14"><a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">2</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mh">0x40</span><span class="w">               </span><span class="p">;</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-15"><a id="__codelineno-0-15" name="__codelineno-0-15" href="#__codelineno-0-15"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">3</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">2</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-16"><a id="__codelineno-0-16" name="__codelineno-0-16" href="#__codelineno-0-16"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">4</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">3</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-17"><a id="__codelineno-0-17" name="__codelineno-0-17" href="#__codelineno-0-17"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">5</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mh">0x40</span><span class="w">               </span><span class="p">;</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-18"><a id="__codelineno-0-18" name="__codelineno-0-18" href="#__codelineno-0-18"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">6</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">4</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-19"><a id="__codelineno-0-19" name="__codelineno-0-19" href="#__codelineno-0-19"></a><span class="w">        </span><span class="k">case</span><span class="w"> </span><span class="mi">7</span><span class="p">:</span><span class="w"> </span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">5</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-20"><a id="__codelineno-0-20" name="__codelineno-0-20" href="#__codelineno-0-20"></a><span class="w">        </span><span class="k">default</span><span class="o">:</span><span class="n">HCC</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCB</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">HCA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="n">SEG</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">segCode</span><span class="p">[</span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]];</span><span class="k">break</span><span class="p">;</span>
</span><span id="__span-0-21"><a id="__codelineno-0-21" name="__codelineno-0-21" href="#__codelineno-0-21"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-0-22"><a id="__codelineno-0-22" name="__codelineno-0-22" href="#__codelineno-0-22"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="ds1302">DS1302中数据的处理<a class="headerlink" href="#ds1302" title="Permanent link">&para;</a></h4>
<p>往DS1302寄存器中写值</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">ds1302write</span><span class="p">(</span><span class="n">u8</span><span class="w"> </span><span class="n">addre</span><span class="p">,</span><span class="n">u8</span><span class="w"> </span><span class="n">dat</span><span class="p">)</span>
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="p">{</span>
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w">    </span><span class="n">u8</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="w">    </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-8"><a id="__codelineno-1-8" name="__codelineno-1-8" href="#__codelineno-1-8"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-1-9"><a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-10"><a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">8</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-1-11"><a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-1-12"><a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a><span class="w">        </span><span class="n">IO</span><span class="o">=</span><span class="n">addre</span><span class="o">&amp;</span><span class="mh">0x01</span><span class="p">;</span>
</span><span id="__span-1-13"><a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="w">        </span><span class="n">addre</span><span class="o">&gt;&gt;=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-1-14"><a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-1-15"><a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-16"><a id="__codelineno-1-16" name="__codelineno-1-16" href="#__codelineno-1-16"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-1-17"><a id="__codelineno-1-17" name="__codelineno-1-17" href="#__codelineno-1-17"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-18"><a id="__codelineno-1-18" name="__codelineno-1-18" href="#__codelineno-1-18"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-1-19"><a id="__codelineno-1-19" name="__codelineno-1-19" href="#__codelineno-1-19"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">8</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-1-20"><a id="__codelineno-1-20" name="__codelineno-1-20" href="#__codelineno-1-20"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-1-21"><a id="__codelineno-1-21" name="__codelineno-1-21" href="#__codelineno-1-21"></a><span class="w">        </span><span class="n">IO</span><span class="o">=</span><span class="n">dat</span><span class="o">&amp;</span><span class="mh">0x01</span><span class="p">;</span>
</span><span id="__span-1-22"><a id="__codelineno-1-22" name="__codelineno-1-22" href="#__codelineno-1-22"></a><span class="w">        </span><span class="n">dat</span><span class="o">&gt;&gt;=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-1-23"><a id="__codelineno-1-23" name="__codelineno-1-23" href="#__codelineno-1-23"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-1-24"><a id="__codelineno-1-24" name="__codelineno-1-24" href="#__codelineno-1-24"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-25"><a id="__codelineno-1-25" name="__codelineno-1-25" href="#__codelineno-1-25"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-1-26"><a id="__codelineno-1-26" name="__codelineno-1-26" href="#__codelineno-1-26"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-1-27"><a id="__codelineno-1-27" name="__codelineno-1-27" href="#__codelineno-1-27"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-1-28"><a id="__codelineno-1-28" name="__codelineno-1-28" href="#__codelineno-1-28"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-1-29"><a id="__codelineno-1-29" name="__codelineno-1-29" href="#__codelineno-1-29"></a><span class="p">}</span>
</span></code></pre></div>
<p>从DS1302中读值</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="n">u8</span><span class="w"> </span><span class="nf">ds1302read</span><span class="p">(</span><span class="n">u8</span><span class="w"> </span><span class="n">addre</span><span class="p">)</span>
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="p">{</span>
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="w">    </span><span class="n">u8</span><span class="w"> </span><span class="n">i</span><span class="p">,</span><span class="n">dat1</span><span class="p">,</span><span class="n">dat</span><span class="p">;</span>
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="w">    </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-7"><a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-8"><a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-9"><a id="__codelineno-2-9" name="__codelineno-2-9" href="#__codelineno-2-9"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-10"><a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">8</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-2-11"><a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-2-12"><a id="__codelineno-2-12" name="__codelineno-2-12" href="#__codelineno-2-12"></a><span class="w">        </span><span class="n">IO</span><span class="o">=</span><span class="n">addre</span><span class="o">&amp;</span><span class="mh">0x01</span><span class="p">;</span>
</span><span id="__span-2-13"><a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a><span class="w">        </span><span class="n">addre</span><span class="o">&gt;&gt;=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-14"><a id="__codelineno-2-14" name="__codelineno-2-14" href="#__codelineno-2-14"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-15"><a id="__codelineno-2-15" name="__codelineno-2-15" href="#__codelineno-2-15"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-16"><a id="__codelineno-2-16" name="__codelineno-2-16" href="#__codelineno-2-16"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-17"><a id="__codelineno-2-17" name="__codelineno-2-17" href="#__codelineno-2-17"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-18"><a id="__codelineno-2-18" name="__codelineno-2-18" href="#__codelineno-2-18"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-2-19"><a id="__codelineno-2-19" name="__codelineno-2-19" href="#__codelineno-2-19"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-20"><a id="__codelineno-2-20" name="__codelineno-2-20" href="#__codelineno-2-20"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">8</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-2-21"><a id="__codelineno-2-21" name="__codelineno-2-21" href="#__codelineno-2-21"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-2-22"><a id="__codelineno-2-22" name="__codelineno-2-22" href="#__codelineno-2-22"></a><span class="w">        </span><span class="n">dat1</span><span class="o">=</span><span class="n">IO</span><span class="p">;</span>
</span><span id="__span-2-23"><a id="__codelineno-2-23" name="__codelineno-2-23" href="#__codelineno-2-23"></a><span class="w">        </span><span class="n">dat</span><span class="o">=</span><span class="p">(</span><span class="n">dat</span><span class="o">&gt;&gt;</span><span class="mi">1</span><span class="p">)</span><span class="o">|</span><span class="p">(</span><span class="n">dat1</span><span class="o">&lt;&lt;</span><span class="mi">7</span><span class="p">);</span>
</span><span id="__span-2-24"><a id="__codelineno-2-24" name="__codelineno-2-24" href="#__codelineno-2-24"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-25"><a id="__codelineno-2-25" name="__codelineno-2-25" href="#__codelineno-2-25"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-26"><a id="__codelineno-2-26" name="__codelineno-2-26" href="#__codelineno-2-26"></a><span class="w">        </span><span class="n">SCK</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-27"><a id="__codelineno-2-27" name="__codelineno-2-27" href="#__codelineno-2-27"></a><span class="w">        </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-28"><a id="__codelineno-2-28" name="__codelineno-2-28" href="#__codelineno-2-28"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-2-29"><a id="__codelineno-2-29" name="__codelineno-2-29" href="#__codelineno-2-29"></a><span class="w">    </span><span class="n">RST</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-30"><a id="__codelineno-2-30" name="__codelineno-2-30" href="#__codelineno-2-30"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-31"><a id="__codelineno-2-31" name="__codelineno-2-31" href="#__codelineno-2-31"></a><span class="w">    </span><span class="n">SCK</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-32"><a id="__codelineno-2-32" name="__codelineno-2-32" href="#__codelineno-2-32"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-33"><a id="__codelineno-2-33" name="__codelineno-2-33" href="#__codelineno-2-33"></a><span class="w">    </span><span class="n">IO</span><span class="o">=</span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-2-34"><a id="__codelineno-2-34" name="__codelineno-2-34" href="#__codelineno-2-34"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-35"><a id="__codelineno-2-35" name="__codelineno-2-35" href="#__codelineno-2-35"></a><span class="w">    </span><span class="n">IO</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-2-36"><a id="__codelineno-2-36" name="__codelineno-2-36" href="#__codelineno-2-36"></a><span class="w">    </span><span class="n">_nop_</span><span class="p">();</span>
</span><span id="__span-2-37"><a id="__codelineno-2-37" name="__codelineno-2-37" href="#__codelineno-2-37"></a><span class="w">    </span><span class="k">return</span><span class="w"> </span><span class="n">dat</span><span class="p">;</span>
</span><span id="__span-2-38"><a id="__codelineno-2-38" name="__codelineno-2-38" href="#__codelineno-2-38"></a><span class="p">}</span>
</span></code></pre></div>
<p>DS1302的初始化，如果在文件开头定义的FIRST_WRITE的值为1，那么在初始化的时候就会往DS1302中写入time[]中设置的时间，在第一次写入可以将这块代码打开，后面就可以关闭。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">ds1302init</span><span class="p">()</span>
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="p">{</span>
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="cp">#if FIRST_WRITE == 1</span>
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w">    </span><span class="n">u8</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="w">    </span><span class="n">ds1302write</span><span class="p">(</span><span class="mh">0x8e</span><span class="p">,</span><span class="mh">0x00</span><span class="p">);</span>
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">7</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-3-8"><a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="w">        </span><span class="n">ds1302write</span><span class="p">(</span><span class="n">writeaddre</span><span class="p">[</span><span class="n">i</span><span class="p">],</span><span class="n">time</span><span class="p">[</span><span class="n">i</span><span class="p">]);</span>
</span><span id="__span-3-9"><a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="w">    </span><span class="n">ds1302write</span><span class="p">(</span><span class="mh">0x8e</span><span class="p">,</span><span class="mh">0x80</span><span class="p">);</span>
</span><span id="__span-3-11"><a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="cp">#endif</span>
</span><span id="__span-3-12"><a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a><span class="p">}</span>
</span></code></pre></div>
<p>DS1302读取时间,将数据从DS1302寄存器中读取出来，然后再做一个BCD码转10进制的转换。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">ds1302readtime</span><span class="p">()</span>
</span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="p">{</span>
</span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a><span class="w">    </span><span class="n">u8</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
</span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">7</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-4-5"><a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-4-6"><a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a><span class="w">        </span><span class="n">time</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="o">=</span><span class="n">ds1302read</span><span class="p">(</span><span class="n">readaddre</span><span class="p">[</span><span class="n">i</span><span class="p">]);</span>
</span><span id="__span-4-7"><a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-4-8"><a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a><span class="w">    </span><span class="n">second</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-9"><a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a><span class="w">    </span><span class="n">minute</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-10"><a id="__codelineno-4-10" name="__codelineno-4-10" href="#__codelineno-4-10"></a><span class="w">    </span><span class="n">hour</span><span class="w">   </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-11"><a id="__codelineno-4-11" name="__codelineno-4-11" href="#__codelineno-4-11"></a><span class="w">    </span><span class="n">day</span><span class="w">    </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-12"><a id="__codelineno-4-12" name="__codelineno-4-12" href="#__codelineno-4-12"></a><span class="w">    </span><span class="n">month</span><span class="w">  </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-13"><a id="__codelineno-4-13" name="__codelineno-4-13" href="#__codelineno-4-13"></a><span class="w">    </span><span class="n">week</span><span class="w">   </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-14"><a id="__codelineno-4-14" name="__codelineno-4-14" href="#__codelineno-4-14"></a><span class="w">    </span><span class="n">year</span><span class="w">   </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">6</span><span class="p">]</span><span class="o">/</span><span class="mi">16</span><span class="p">)</span><span class="o">*</span><span class="mi">10</span><span class="o">+</span><span class="p">(</span><span class="n">time</span><span class="p">[</span><span class="mi">6</span><span class="p">]</span><span class="o">&amp;</span><span class="mh">0x0f</span><span class="p">);</span>
</span><span id="__span-4-15"><a id="__codelineno-4-15" name="__codelineno-4-15" href="#__codelineno-4-15"></a><span class="p">}</span>
</span></code></pre></div>
<p>DS1302写入时间，将要写入的变量先做10进制转BCD码，然后写入相应的寄存器。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">ds1302writetime</span><span class="p">()</span>
</span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="p">{</span>
</span><span id="__span-5-3"><a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="w">    </span><span class="n">u8</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
</span><span id="__span-5-4"><a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="w">    </span><span class="n">ds1302write</span><span class="p">(</span><span class="mh">0x8e</span><span class="p">,</span><span class="mh">0x00</span><span class="p">);</span>
</span><span id="__span-5-5"><a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">secondTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">secondTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-6"><a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">minuteTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">minuteTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-7"><a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">hourTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w">   </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">hourTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-8"><a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">dayTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w">    </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">dayTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-9"><a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">monthTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w">  </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">monthTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-10"><a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">weekTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w">   </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">weekTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-11"><a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a><span class="w">    </span><span class="n">time</span><span class="p">[</span><span class="mi">6</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(((</span><span class="n">yearTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">)</span><span class="o">&lt;&lt;</span><span class="mi">4</span><span class="p">)</span><span class="w">   </span><span class="o">+</span><span class="w"> </span><span class="p">(</span><span class="n">yearTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">));</span>
</span><span id="__span-5-12"><a id="__codelineno-5-12" name="__codelineno-5-12" href="#__codelineno-5-12"></a>
</span><span id="__span-5-13"><a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a><span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span><span class="n">i</span><span class="o">&lt;</span><span class="mi">7</span><span class="p">;</span><span class="n">i</span><span class="o">++</span><span class="p">)</span>
</span><span id="__span-5-14"><a id="__codelineno-5-14" name="__codelineno-5-14" href="#__codelineno-5-14"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-5-15"><a id="__codelineno-5-15" name="__codelineno-5-15" href="#__codelineno-5-15"></a><span class="w">        </span><span class="n">ds1302write</span><span class="p">(</span><span class="n">writeaddre</span><span class="p">[</span><span class="n">i</span><span class="p">],</span><span class="n">time</span><span class="p">[</span><span class="n">i</span><span class="p">]);</span>
</span><span id="__span-5-16"><a id="__codelineno-5-16" name="__codelineno-5-16" href="#__codelineno-5-16"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-5-17"><a id="__codelineno-5-17" name="__codelineno-5-17" href="#__codelineno-5-17"></a><span class="w">    </span><span class="n">ds1302write</span><span class="p">(</span><span class="mh">0x8e</span><span class="p">,</span><span class="mh">0x80</span><span class="p">);</span>
</span><span id="__span-5-18"><a id="__codelineno-5-18" name="__codelineno-5-18" href="#__codelineno-5-18"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="_8">按键扫描<a class="headerlink" href="#_8" title="Permanent link">&para;</a></h4>
<p>按键扫描参考正点原子的写法，但是我的延时不是按照他的用delay延时，而是使用的定时器延时，这样的好处是延时时不占用CPU资源。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">KeyScan</span><span class="p">(</span><span class="n">u8</span><span class="w"> </span><span class="n">mode</span><span class="p">)</span>
</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="p">{</span>
</span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a><span class="w">    </span><span class="k">static</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">keyCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="w">    </span><span class="k">static</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">keyState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">mode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="n">keyState</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-6-6"><a id="__codelineno-6-6" name="__codelineno-6-6" href="#__codelineno-6-6"></a><span class="w">    </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">keyState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="p">(</span><span class="n">KEY0</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="o">||</span><span class="n">KEY1</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="o">||</span><span class="n">KEY2</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="o">||</span><span class="n">KEY3</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">))</span>
</span><span id="__span-6-7"><a id="__codelineno-6-7" name="__codelineno-6-7" href="#__codelineno-6-7"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-6-8"><a id="__codelineno-6-8" name="__codelineno-6-8" href="#__codelineno-6-8"></a><span class="w">        </span><span class="n">keyCount</span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-6-9"><a id="__codelineno-6-9" name="__codelineno-6-9" href="#__codelineno-6-9"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">keyCount</span><span class="o">&gt;</span><span class="mi">2</span><span class="p">)</span>
</span><span id="__span-6-10"><a id="__codelineno-6-10" name="__codelineno-6-10" href="#__codelineno-6-10"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-6-11"><a id="__codelineno-6-11" name="__codelineno-6-11" href="#__codelineno-6-11"></a><span class="w">            </span><span class="n">keyState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-6-12"><a id="__codelineno-6-12" name="__codelineno-6-12" href="#__codelineno-6-12"></a><span class="w">            </span><span class="n">keyCount</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-6-13"><a id="__codelineno-6-13" name="__codelineno-6-13" href="#__codelineno-6-13"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">KEY0</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="n">isKey0</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-6-14"><a id="__codelineno-6-14" name="__codelineno-6-14" href="#__codelineno-6-14"></a><span class="w">            </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">KEY1</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="n">isKey1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-6-15"><a id="__codelineno-6-15" name="__codelineno-6-15" href="#__codelineno-6-15"></a><span class="w">            </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">KEY2</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="n">isKey2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-6-16"><a id="__codelineno-6-16" name="__codelineno-6-16" href="#__codelineno-6-16"></a><span class="w">            </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">KEY3</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="n">isKey3</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-6-17"><a id="__codelineno-6-17" name="__codelineno-6-17" href="#__codelineno-6-17"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-6-18"><a id="__codelineno-6-18" name="__codelineno-6-18" href="#__codelineno-6-18"></a><span class="w">    </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">KEY0</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">KEY1</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">KEY2</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">KEY3</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-6-19"><a id="__codelineno-6-19" name="__codelineno-6-19" href="#__codelineno-6-19"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-6-20"><a id="__codelineno-6-20" name="__codelineno-6-20" href="#__codelineno-6-20"></a><span class="w">        </span><span class="n">keyState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-6-21"><a id="__codelineno-6-21" name="__codelineno-6-21" href="#__codelineno-6-21"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-6-22"><a id="__codelineno-6-22" name="__codelineno-6-22" href="#__codelineno-6-22"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="_9">根据显示模式修改显示变量<a class="headerlink" href="#_9" title="Permanent link">&para;</a></h4>
<p>根据显示状态变量，修改现在的显示变量</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">SegBuffChange</span><span class="p">()</span>
</span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a><span class="p">{</span>
</span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span>
</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5" href="#__codelineno-7-5"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">second</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-6"><a id="__codelineno-7-6" name="__codelineno-7-6" href="#__codelineno-7-6"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">second</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-7"><a id="__codelineno-7-7" name="__codelineno-7-7" href="#__codelineno-7-7"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">minute</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-8"><a id="__codelineno-7-8" name="__codelineno-7-8" href="#__codelineno-7-8"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">minute</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-9"><a id="__codelineno-7-9" name="__codelineno-7-9" href="#__codelineno-7-9"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hour</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-10"><a id="__codelineno-7-10" name="__codelineno-7-10" href="#__codelineno-7-10"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hour</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-11"><a id="__codelineno-7-11" name="__codelineno-7-11" href="#__codelineno-7-11"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-7-12"><a id="__codelineno-7-12" name="__codelineno-7-12" href="#__codelineno-7-12"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-7-13"><a id="__codelineno-7-13" name="__codelineno-7-13" href="#__codelineno-7-13"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">day</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-14"><a id="__codelineno-7-14" name="__codelineno-7-14" href="#__codelineno-7-14"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">day</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-15"><a id="__codelineno-7-15" name="__codelineno-7-15" href="#__codelineno-7-15"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">month</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-16"><a id="__codelineno-7-16" name="__codelineno-7-16" href="#__codelineno-7-16"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">month</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-17"><a id="__codelineno-7-17" name="__codelineno-7-17" href="#__codelineno-7-17"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">year</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-18"><a id="__codelineno-7-18" name="__codelineno-7-18" href="#__codelineno-7-18"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">year</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-19"><a id="__codelineno-7-19" name="__codelineno-7-19" href="#__codelineno-7-19"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">2</span><span class="p">)</span>
</span><span id="__span-7-20"><a id="__codelineno-7-20" name="__codelineno-7-20" href="#__codelineno-7-20"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-7-21"><a id="__codelineno-7-21" name="__codelineno-7-21" href="#__codelineno-7-21"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">secondTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-22"><a id="__codelineno-7-22" name="__codelineno-7-22" href="#__codelineno-7-22"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">secondTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-23"><a id="__codelineno-7-23" name="__codelineno-7-23" href="#__codelineno-7-23"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">minuteTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-24"><a id="__codelineno-7-24" name="__codelineno-7-24" href="#__codelineno-7-24"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">minuteTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-25"><a id="__codelineno-7-25" name="__codelineno-7-25" href="#__codelineno-7-25"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hourTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-26"><a id="__codelineno-7-26" name="__codelineno-7-26" href="#__codelineno-7-26"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hourTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-27"><a id="__codelineno-7-27" name="__codelineno-7-27" href="#__codelineno-7-27"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">3</span><span class="p">)</span>
</span><span id="__span-7-28"><a id="__codelineno-7-28" name="__codelineno-7-28" href="#__codelineno-7-28"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-7-29"><a id="__codelineno-7-29" name="__codelineno-7-29" href="#__codelineno-7-29"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">dayTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-30"><a id="__codelineno-7-30" name="__codelineno-7-30" href="#__codelineno-7-30"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">dayTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-31"><a id="__codelineno-7-31" name="__codelineno-7-31" href="#__codelineno-7-31"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">monthTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-32"><a id="__codelineno-7-32" name="__codelineno-7-32" href="#__codelineno-7-32"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">monthTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-33"><a id="__codelineno-7-33" name="__codelineno-7-33" href="#__codelineno-7-33"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">yearTemp</span><span class="o">%</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-34"><a id="__codelineno-7-34" name="__codelineno-7-34" href="#__codelineno-7-34"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">yearTemp</span><span class="o">/</span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-7-35"><a id="__codelineno-7-35" name="__codelineno-7-35" href="#__codelineno-7-35"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-7-36"><a id="__codelineno-7-36" name="__codelineno-7-36" href="#__codelineno-7-36"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="_10">闪烁函数<a class="headerlink" href="#_10" title="Permanent link">&para;</a></h4>
<p>在按键修改模式下，将闪烁状态值置1，由于该函数放置在segBuff修改的后面，所以在实际显示前，会以这里改变的为实际显示，就可以达到一个闪烁的效果。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">dataBlink</span><span class="p">()</span>
</span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a><span class="p">{</span>
</span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a><span class="w">    </span><span class="k">static</span><span class="w"> </span><span class="n">u8</span><span class="w">  </span><span class="n">blinkCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="w">    </span><span class="k">static</span><span class="w"> </span><span class="n">bit</span><span class="w"> </span><span class="n">blinkState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-8-5"><a id="__codelineno-8-5" name="__codelineno-8-5" href="#__codelineno-8-5"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//在按键修改模式下</span>
</span><span id="__span-8-6"><a id="__codelineno-8-6" name="__codelineno-8-6" href="#__codelineno-8-6"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-8-7"><a id="__codelineno-8-7" name="__codelineno-8-7" href="#__codelineno-8-7"></a><span class="w">        </span><span class="n">blinkCount</span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-8-8"><a id="__codelineno-8-8" name="__codelineno-8-8" href="#__codelineno-8-8"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">blinkCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">80</span><span class="p">)</span><span class="c1">//每隔80*5 闪烁状态值转换</span>
</span><span id="__span-8-9"><a id="__codelineno-8-9" name="__codelineno-8-9" href="#__codelineno-8-9"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-8-10"><a id="__codelineno-8-10" name="__codelineno-8-10" href="#__codelineno-8-10"></a><span class="w">            </span><span class="n">blinkState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">!</span><span class="n">blinkState</span><span class="p">;</span>
</span><span id="__span-8-11"><a id="__codelineno-8-11" name="__codelineno-8-11" href="#__codelineno-8-11"></a><span class="w">            </span><span class="n">blinkCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-8-12"><a id="__codelineno-8-12" name="__codelineno-8-12" href="#__codelineno-8-12"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-8-13"><a id="__codelineno-8-13" name="__codelineno-8-13" href="#__codelineno-8-13"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span>
</span><span id="__span-8-14"><a id="__codelineno-8-14" name="__codelineno-8-14" href="#__codelineno-8-14"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-8-15"><a id="__codelineno-8-15" name="__codelineno-8-15" href="#__codelineno-8-15"></a><span class="w">        </span><span class="n">blinkState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-8-16"><a id="__codelineno-8-16" name="__codelineno-8-16" href="#__codelineno-8-16"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-8-17"><a id="__codelineno-8-17" name="__codelineno-8-17" href="#__codelineno-8-17"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">blinkState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//假如闪烁状态值为1，该位次变量数码管不显示，我在seg.c中有定义，10就是不显示</span>
</span><span id="__span-8-18"><a id="__codelineno-8-18" name="__codelineno-8-18" href="#__codelineno-8-18"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-8-19"><a id="__codelineno-8-19" name="__codelineno-8-19" href="#__codelineno-8-19"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[(</span><span class="mi">2</span><span class="o">-</span><span class="n">changeCount</span><span class="o">%</span><span class="mi">3</span><span class="p">)</span><span class="o">*</span><span class="mi">2</span><span class="o">+</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-8-20"><a id="__codelineno-8-20" name="__codelineno-8-20" href="#__codelineno-8-20"></a><span class="w">        </span><span class="n">segBuff</span><span class="p">[(</span><span class="mi">2</span><span class="o">-</span><span class="n">changeCount</span><span class="o">%</span><span class="mi">3</span><span class="p">)</span><span class="o">*</span><span class="mi">2</span><span class="p">]</span><span class="w">   </span><span class="o">=</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span>
</span><span id="__span-8-21"><a id="__codelineno-8-21" name="__codelineno-8-21" href="#__codelineno-8-21"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-8-22"><a id="__codelineno-8-22" name="__codelineno-8-22" href="#__codelineno-8-22"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="_11">按键执行函数<a class="headerlink" href="#_11" title="Permanent link">&para;</a></h4>
<p>按键按下后的执行函数,可以看代码注释</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-9-1"><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">ClockChangeFunction</span><span class="p">()</span>
</span><span id="__span-9-2"><a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a><span class="p">{</span>
</span><span id="__span-9-3"><a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">isKey0</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-9-4"><a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-9-5"><a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="w">        </span><span class="n">isKey0</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-6"><a id="__codelineno-9-6" name="__codelineno-9-6" href="#__codelineno-9-6"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="c1">//修改的位选为0，即为秒，同时显示状态为正常显示状态下</span>
</span><span id="__span-9-7"><a id="__codelineno-9-7" name="__codelineno-9-7" href="#__codelineno-9-7"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-8"><a id="__codelineno-9-8" name="__codelineno-9-8" href="#__codelineno-9-8"></a><span class="w">            </span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="c1">//显示状态改为修改时间模式</span>
</span><span id="__span-9-9"><a id="__codelineno-9-9" name="__codelineno-9-9" href="#__codelineno-9-9"></a><span class="w">            </span><span class="n">DataTempGet</span><span class="p">();</span><span class="c1">//获取修改前的时间变量值</span>
</span><span id="__span-9-10"><a id="__codelineno-9-10" name="__codelineno-9-10" href="#__codelineno-9-10"></a><span class="w">            </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="c1">//显示模式为显示修改时间下的时分秒</span>
</span><span id="__span-9-11"><a id="__codelineno-9-11" name="__codelineno-9-11" href="#__codelineno-9-11"></a><span class="w">        </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//假如为显示模式</span>
</span><span id="__span-9-12"><a id="__codelineno-9-12" name="__codelineno-9-12" href="#__codelineno-9-12"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-13"><a id="__codelineno-9-13" name="__codelineno-9-13" href="#__codelineno-9-13"></a><span class="w">            </span><span class="n">changeCount</span><span class="o">++</span><span class="p">;</span><span class="c1">//按键按下位次++</span>
</span><span id="__span-9-14"><a id="__codelineno-9-14" name="__codelineno-9-14" href="#__codelineno-9-14"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">5</span><span class="p">)</span>
</span><span id="__span-9-15"><a id="__codelineno-9-15" name="__codelineno-9-15" href="#__codelineno-9-15"></a><span class="w">                </span><span class="n">changeCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-16"><a id="__codelineno-9-16" name="__codelineno-9-16" href="#__codelineno-9-16"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">2</span><span class="p">)</span><span class="c1">//时分秒是0、1、2，大于2就要换成年月日显示</span>
</span><span id="__span-9-17"><a id="__codelineno-9-17" name="__codelineno-9-17" href="#__codelineno-9-17"></a><span class="w">                </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span><span class="c1">//显示模式为显示修改时间下的年月日</span>
</span><span id="__span-9-18"><a id="__codelineno-9-18" name="__codelineno-9-18" href="#__codelineno-9-18"></a><span class="w">            </span><span class="k">else</span>
</span><span id="__span-9-19"><a id="__codelineno-9-19" name="__codelineno-9-19" href="#__codelineno-9-19"></a><span class="w">                </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span>
</span><span id="__span-9-20"><a id="__codelineno-9-20" name="__codelineno-9-20" href="#__codelineno-9-20"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-9-21"><a id="__codelineno-9-21" name="__codelineno-9-21" href="#__codelineno-9-21"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">isKey1</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-9-22"><a id="__codelineno-9-22" name="__codelineno-9-22" href="#__codelineno-9-22"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-9-23"><a id="__codelineno-9-23" name="__codelineno-9-23" href="#__codelineno-9-23"></a><span class="w">        </span><span class="n">isKey1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-24"><a id="__codelineno-9-24" name="__codelineno-9-24" href="#__codelineno-9-24"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//显示状态为修改时间模式</span>
</span><span id="__span-9-25"><a id="__codelineno-9-25" name="__codelineno-9-25" href="#__codelineno-9-25"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-26"><a id="__codelineno-9-26" name="__codelineno-9-26" href="#__codelineno-9-26"></a><span class="w">            </span><span class="n">dataAdd</span><span class="p">();</span><span class="c1">//对应位次时间变量增加</span>
</span><span id="__span-9-27"><a id="__codelineno-9-27" name="__codelineno-9-27" href="#__codelineno-9-27"></a><span class="w">        </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="c1">//正常显示模式</span>
</span><span id="__span-9-28"><a id="__codelineno-9-28" name="__codelineno-9-28" href="#__codelineno-9-28"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-29"><a id="__codelineno-9-29" name="__codelineno-9-29" href="#__codelineno-9-29"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="c1">//切换时间和日期的显示</span>
</span><span id="__span-9-30"><a id="__codelineno-9-30" name="__codelineno-9-30" href="#__codelineno-9-30"></a><span class="w">                </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-9-31"><a id="__codelineno-9-31" name="__codelineno-9-31" href="#__codelineno-9-31"></a><span class="w">            </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">showMode</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-9-32"><a id="__codelineno-9-32" name="__codelineno-9-32" href="#__codelineno-9-32"></a><span class="w">                </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-33"><a id="__codelineno-9-33" name="__codelineno-9-33" href="#__codelineno-9-33"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-9-34"><a id="__codelineno-9-34" name="__codelineno-9-34" href="#__codelineno-9-34"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">isKey2</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-9-35"><a id="__codelineno-9-35" name="__codelineno-9-35" href="#__codelineno-9-35"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-9-36"><a id="__codelineno-9-36" name="__codelineno-9-36" href="#__codelineno-9-36"></a><span class="w">        </span><span class="n">isKey2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-37"><a id="__codelineno-9-37" name="__codelineno-9-37" href="#__codelineno-9-37"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//和增加一样</span>
</span><span id="__span-9-38"><a id="__codelineno-9-38" name="__codelineno-9-38" href="#__codelineno-9-38"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-39"><a id="__codelineno-9-39" name="__codelineno-9-39" href="#__codelineno-9-39"></a><span class="w">            </span><span class="n">dataSub</span><span class="p">();</span>
</span><span id="__span-9-40"><a id="__codelineno-9-40" name="__codelineno-9-40" href="#__codelineno-9-40"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-9-41"><a id="__codelineno-9-41" name="__codelineno-9-41" href="#__codelineno-9-41"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">isKey3</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-9-42"><a id="__codelineno-9-42" name="__codelineno-9-42" href="#__codelineno-9-42"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-9-43"><a id="__codelineno-9-43" name="__codelineno-9-43" href="#__codelineno-9-43"></a><span class="w">        </span><span class="n">isKey3</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-9-44"><a id="__codelineno-9-44" name="__codelineno-9-44" href="#__codelineno-9-44"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="c1">//在修改模式下按下</span>
</span><span id="__span-9-45"><a id="__codelineno-9-45" name="__codelineno-9-45" href="#__codelineno-9-45"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-9-46"><a id="__codelineno-9-46" name="__codelineno-9-46" href="#__codelineno-9-46"></a><span class="w">            </span><span class="n">changeOrNormalState</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="c1">//变为正常显示模式</span>
</span><span id="__span-9-47"><a id="__codelineno-9-47" name="__codelineno-9-47" href="#__codelineno-9-47"></a><span class="w">            </span><span class="n">ds1302writetime</span><span class="p">();</span><span class="c1">//写入修改后的时间</span>
</span><span id="__span-9-48"><a id="__codelineno-9-48" name="__codelineno-9-48" href="#__codelineno-9-48"></a><span class="w">            </span><span class="n">showMode</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="c1">//显示模式为时分秒</span>
</span><span id="__span-9-49"><a id="__codelineno-9-49" name="__codelineno-9-49" href="#__codelineno-9-49"></a><span class="w">            </span><span class="n">changeCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="c1">//修改位次归零</span>
</span><span id="__span-9-50"><a id="__codelineno-9-50" name="__codelineno-9-50" href="#__codelineno-9-50"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-9-51"><a id="__codelineno-9-51" name="__codelineno-9-51" href="#__codelineno-9-51"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-9-52"><a id="__codelineno-9-52" name="__codelineno-9-52" href="#__codelineno-9-52"></a><span class="p">}</span>
</span></code></pre></div>
<h4 id="_12">时间变量增加函数<a class="headerlink" href="#_12" title="Permanent link">&para;</a></h4>
<p>这部分代码，在按键执行函数中执行，但是由于 这一部分太多，所以将其封装函数,主要是拿来改变时间变量。主要是有个平闰年的处理，其他都比较正常。</p>
<div class="language-c highlight"><pre><span></span><code><span id="__span-10-1"><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a><span class="kt">void</span><span class="w"> </span><span class="nf">dataAdd</span><span class="p">()</span>
</span><span id="__span-10-2"><a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a><span class="p">{</span>
</span><span id="__span-10-3"><a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a><span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span>
</span><span id="__span-10-4"><a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-5"><a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a><span class="w">        </span><span class="n">secondTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-6"><a id="__codelineno-10-6" name="__codelineno-10-6" href="#__codelineno-10-6"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">secondTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">59</span><span class="p">)</span>
</span><span id="__span-10-7"><a id="__codelineno-10-7" name="__codelineno-10-7" href="#__codelineno-10-7"></a><span class="w">            </span><span class="n">secondTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-10-8"><a id="__codelineno-10-8" name="__codelineno-10-8" href="#__codelineno-10-8"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
</span><span id="__span-10-9"><a id="__codelineno-10-9" name="__codelineno-10-9" href="#__codelineno-10-9"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-10"><a id="__codelineno-10-10" name="__codelineno-10-10" href="#__codelineno-10-10"></a><span class="w">        </span><span class="n">minuteTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-11"><a id="__codelineno-10-11" name="__codelineno-10-11" href="#__codelineno-10-11"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">minuteTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">59</span><span class="p">)</span>
</span><span id="__span-10-12"><a id="__codelineno-10-12" name="__codelineno-10-12" href="#__codelineno-10-12"></a><span class="w">            </span><span class="n">minuteTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-10-13"><a id="__codelineno-10-13" name="__codelineno-10-13" href="#__codelineno-10-13"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">2</span><span class="p">)</span>
</span><span id="__span-10-14"><a id="__codelineno-10-14" name="__codelineno-10-14" href="#__codelineno-10-14"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-15"><a id="__codelineno-10-15" name="__codelineno-10-15" href="#__codelineno-10-15"></a><span class="w">        </span><span class="n">hourTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-16"><a id="__codelineno-10-16" name="__codelineno-10-16" href="#__codelineno-10-16"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">hourTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">23</span><span class="p">)</span>
</span><span id="__span-10-17"><a id="__codelineno-10-17" name="__codelineno-10-17" href="#__codelineno-10-17"></a><span class="w">            </span><span class="n">hourTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-10-18"><a id="__codelineno-10-18" name="__codelineno-10-18" href="#__codelineno-10-18"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">3</span><span class="p">)</span>
</span><span id="__span-10-19"><a id="__codelineno-10-19" name="__codelineno-10-19" href="#__codelineno-10-19"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-20"><a id="__codelineno-10-20" name="__codelineno-10-20" href="#__codelineno-10-20"></a><span class="w">        </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-21"><a id="__codelineno-10-21" name="__codelineno-10-21" href="#__codelineno-10-21"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">3</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">5</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">7</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">8</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">10</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">12</span><span class="p">)</span>
</span><span id="__span-10-22"><a id="__codelineno-10-22" name="__codelineno-10-22" href="#__codelineno-10-22"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-10-23"><a id="__codelineno-10-23" name="__codelineno-10-23" href="#__codelineno-10-23"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">dayTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">31</span><span class="p">)</span>
</span><span id="__span-10-24"><a id="__codelineno-10-24" name="__codelineno-10-24" href="#__codelineno-10-24"></a><span class="w">                </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-25"><a id="__codelineno-10-25" name="__codelineno-10-25" href="#__codelineno-10-25"></a><span class="w">        </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">3</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">6</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">9</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">11</span><span class="p">)</span>
</span><span id="__span-10-26"><a id="__codelineno-10-26" name="__codelineno-10-26" href="#__codelineno-10-26"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-10-27"><a id="__codelineno-10-27" name="__codelineno-10-27" href="#__codelineno-10-27"></a><span class="w">            </span><span class="k">if</span><span class="p">(</span><span class="n">dayTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">30</span><span class="p">)</span>
</span><span id="__span-10-28"><a id="__codelineno-10-28" name="__codelineno-10-28" href="#__codelineno-10-28"></a><span class="w">                </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-29"><a id="__codelineno-10-29" name="__codelineno-10-29" href="#__codelineno-10-29"></a><span class="w">        </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">monthTemp</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">2</span><span class="p">)</span>
</span><span id="__span-10-30"><a id="__codelineno-10-30" name="__codelineno-10-30" href="#__codelineno-10-30"></a><span class="w">        </span><span class="p">{</span>
</span><span id="__span-10-31"><a id="__codelineno-10-31" name="__codelineno-10-31" href="#__codelineno-10-31"></a><span class="w">            </span><span class="k">if</span><span class="p">((</span><span class="mi">2000</span><span class="o">+</span><span class="n">year</span><span class="p">)</span><span class="o">%</span><span class="mi">400</span><span class="o">==</span><span class="mi">0</span><span class="p">)</span>
</span><span id="__span-10-32"><a id="__codelineno-10-32" name="__codelineno-10-32" href="#__codelineno-10-32"></a><span class="w">            </span><span class="p">{</span>
</span><span id="__span-10-33"><a id="__codelineno-10-33" name="__codelineno-10-33" href="#__codelineno-10-33"></a><span class="w">                </span><span class="k">if</span><span class="p">(</span><span class="n">dayTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">29</span><span class="p">)</span>
</span><span id="__span-10-34"><a id="__codelineno-10-34" name="__codelineno-10-34" href="#__codelineno-10-34"></a><span class="w">                    </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-35"><a id="__codelineno-10-35" name="__codelineno-10-35" href="#__codelineno-10-35"></a><span class="w">            </span><span class="p">}</span>
</span><span id="__span-10-36"><a id="__codelineno-10-36" name="__codelineno-10-36" href="#__codelineno-10-36"></a><span class="w">            </span><span class="k">else</span>
</span><span id="__span-10-37"><a id="__codelineno-10-37" name="__codelineno-10-37" href="#__codelineno-10-37"></a><span class="w">            </span><span class="p">{</span>
</span><span id="__span-10-38"><a id="__codelineno-10-38" name="__codelineno-10-38" href="#__codelineno-10-38"></a><span class="w">                </span><span class="k">if</span><span class="p">((</span><span class="mi">2000</span><span class="o">+</span><span class="n">year</span><span class="p">)</span><span class="o">%</span><span class="mi">4</span><span class="o">==</span><span class="mi">0</span><span class="o">&amp;&amp;</span><span class="p">(</span><span class="mi">2000</span><span class="o">+</span><span class="n">year</span><span class="p">)</span><span class="o">%</span><span class="mi">100</span><span class="o">!=</span><span class="mi">0</span><span class="p">)</span>
</span><span id="__span-10-39"><a id="__codelineno-10-39" name="__codelineno-10-39" href="#__codelineno-10-39"></a><span class="w">                </span><span class="p">{</span>
</span><span id="__span-10-40"><a id="__codelineno-10-40" name="__codelineno-10-40" href="#__codelineno-10-40"></a><span class="w">                    </span><span class="k">if</span><span class="p">(</span><span class="n">dayTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">29</span><span class="p">)</span>
</span><span id="__span-10-41"><a id="__codelineno-10-41" name="__codelineno-10-41" href="#__codelineno-10-41"></a><span class="w">                        </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-42"><a id="__codelineno-10-42" name="__codelineno-10-42" href="#__codelineno-10-42"></a><span class="w">                </span><span class="p">}</span><span class="k">else</span>
</span><span id="__span-10-43"><a id="__codelineno-10-43" name="__codelineno-10-43" href="#__codelineno-10-43"></a><span class="w">                </span><span class="p">{</span>
</span><span id="__span-10-44"><a id="__codelineno-10-44" name="__codelineno-10-44" href="#__codelineno-10-44"></a><span class="w">                    </span><span class="k">if</span><span class="p">(</span><span class="n">dayTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">28</span><span class="p">)</span>
</span><span id="__span-10-45"><a id="__codelineno-10-45" name="__codelineno-10-45" href="#__codelineno-10-45"></a><span class="w">                        </span><span class="n">dayTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-46"><a id="__codelineno-10-46" name="__codelineno-10-46" href="#__codelineno-10-46"></a><span class="w">                </span><span class="p">}</span>
</span><span id="__span-10-47"><a id="__codelineno-10-47" name="__codelineno-10-47" href="#__codelineno-10-47"></a><span class="w">            </span><span class="p">}</span>
</span><span id="__span-10-48"><a id="__codelineno-10-48" name="__codelineno-10-48" href="#__codelineno-10-48"></a><span class="w">        </span><span class="p">}</span>
</span><span id="__span-10-49"><a id="__codelineno-10-49" name="__codelineno-10-49" href="#__codelineno-10-49"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">4</span><span class="p">)</span>
</span><span id="__span-10-50"><a id="__codelineno-10-50" name="__codelineno-10-50" href="#__codelineno-10-50"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-51"><a id="__codelineno-10-51" name="__codelineno-10-51" href="#__codelineno-10-51"></a><span class="w">        </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-52"><a id="__codelineno-10-52" name="__codelineno-10-52" href="#__codelineno-10-52"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">monthTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">12</span><span class="p">)</span>
</span><span id="__span-10-53"><a id="__codelineno-10-53" name="__codelineno-10-53" href="#__codelineno-10-53"></a><span class="w">            </span><span class="n">monthTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
</span><span id="__span-10-54"><a id="__codelineno-10-54" name="__codelineno-10-54" href="#__codelineno-10-54"></a><span class="w">    </span><span class="p">}</span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">changeCount</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">5</span><span class="p">)</span>
</span><span id="__span-10-55"><a id="__codelineno-10-55" name="__codelineno-10-55" href="#__codelineno-10-55"></a><span class="w">    </span><span class="p">{</span>
</span><span id="__span-10-56"><a id="__codelineno-10-56" name="__codelineno-10-56" href="#__codelineno-10-56"></a><span class="w">        </span><span class="n">yearTemp</span><span class="w"> </span><span class="o">++</span><span class="p">;</span>
</span><span id="__span-10-57"><a id="__codelineno-10-57" name="__codelineno-10-57" href="#__codelineno-10-57"></a><span class="w">        </span><span class="k">if</span><span class="p">(</span><span class="n">yearTemp</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">99</span><span class="p">)</span>
</span><span id="__span-10-58"><a id="__codelineno-10-58" name="__codelineno-10-58" href="#__codelineno-10-58"></a><span class="w">            </span><span class="n">yearTemp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
</span><span id="__span-10-59"><a id="__codelineno-10-59" name="__codelineno-10-59" href="#__codelineno-10-59"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-10-60"><a id="__codelineno-10-60" name="__codelineno-10-60" href="#__codelineno-10-60"></a><span class="p">}</span>
</span></code></pre></div>
<h2 id="_13">总结<a class="headerlink" href="#_13" title="Permanent link">&para;</a></h2>
<p>这个设计功能比较简单，也许有些地方也有一些小BUG，但是我目前没有发现，如果有人发现，欢迎交流。</p>












                
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